trunk/tools/utils4lh.java

package tools;

import java.io.*;
import tools.*;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.ListIterator;
import java.util.Iterator;

public class utils4lh {

    private utils4lh() {}

    public static LinkedHashMap reverse(LinkedHashMap lhm) {

        LinkedHashMap rvLhm = new LinkedHashMap();
        
        Object[] a = lhm.keySet().toArray();
        
        for (int i = a.length-1; i > -1; i--) {
            rvLhm.put(a[i], lhm.get(a[i]));
            
        }
        
        return rvLhm;
    
    }

    public static LinkedHashMap putKeyFirst(LinkedHashMap lhm, Object key) {
        
        LinkedHashMap oldLhm = (LinkedHashMap)lhm.clone();
        LinkedHashMap newLhm = new LinkedHashMap();

        newLhm.put(key, oldLhm.get(key));
        oldLhm.remove(key);
        newLhm.putAll(oldLhm);

        return newLhm;

    }

    public static LinkedHashSet linkedHashSetDiff(LinkedHashSet a, LinkedHashSet b) {

        Object obj;
        LinkedHashSet a_b = new LinkedHashSet();
        LinkedHashSet ab = new LinkedHashSet();
        LinkedHashSet all = new LinkedHashSet();

        for (Iterator aItr = a.iterator(); aItr.hasNext();) {
            obj = aItr.next();
            if (b.contains(obj)) {
                b.remove(obj);
                ab.add(obj);
            } else {
                a_b.add(obj);
            }
        }

        all.add(a_b);
        all.add(ab);
        all.add(b);
        
        return all;

    }

}
Revision:	7
Committed:	Mon Jan 23 09:19:47 2006 UTC (18 years, 9 months ago) by duarte
File size:	1251 byte(s)
Log Message:	Moved everything to subdir tools, so that we keep the tools name for the package. Also changed the package name in the files to tools. To work with it please check out only file:///.../svn/tools/trunk/tools
Line	User	Rev	File contents
1	duarte	7	package tools;
2
3			import java.io.*;
4			import tools.*;
5			import java.util.LinkedHashMap;
6			import java.util.LinkedHashSet;
7			import java.util.ListIterator;
8			import java.util.Iterator;
9
10			public class utils4lh {
11
12			private utils4lh() {}
13
14			public static LinkedHashMap reverse(LinkedHashMap lhm) {
15
16			LinkedHashMap rvLhm = new LinkedHashMap();
17
18			Object[] a = lhm.keySet().toArray();
19
20			for (int i = a.length-1; i > -1; i--) {
21			rvLhm.put(a[i], lhm.get(a[i]));
22
23			}
24
25			return rvLhm;
26
27			}
28
29			public static LinkedHashMap putKeyFirst(LinkedHashMap lhm, Object key) {
30
31			LinkedHashMap oldLhm = (LinkedHashMap)lhm.clone();
32			LinkedHashMap newLhm = new LinkedHashMap();
33
34			newLhm.put(key, oldLhm.get(key));
35			oldLhm.remove(key);
36			newLhm.putAll(oldLhm);
37
38			return newLhm;
39
40			}
41
42			public static LinkedHashSet linkedHashSetDiff(LinkedHashSet a, LinkedHashSet b) {
43
44			Object obj;
45			LinkedHashSet a_b = new LinkedHashSet();
46			LinkedHashSet ab = new LinkedHashSet();
47			LinkedHashSet all = new LinkedHashSet();
48
49			for (Iterator aItr = a.iterator(); aItr.hasNext();) {
50			obj = aItr.next();
51			if (b.contains(obj)) {
52			b.remove(obj);
53			ab.add(obj);
54			} else {
55			a_b.add(obj);
56			}
57			}
58
59			all.add(a_b);
60			all.add(ab);
61			all.add(b);
62
63			return all;
64
65			}
66
67			}